PERENNIAL SUNFLOWERS. 



85 



§§ Involucral tracts half as long as in the last section, ovate- 

 lanceolate, acuminate or attenuate-acute. 



H. Icetiflorus, Pers. — Stem stiff, scabrous or hispid, 6 to 8 feet 

 high, very leafy to summit ; upper leaves opposite or alternate, 

 thinnish, dark green, entire or coarsely serrate or toothed ; lower 

 9 to 12 inches long, broadly ovate-acuminate to both ends, and 

 distinctly stalked, 3-nerved, distinctly veined ; bracts of involucre 

 of three to four series, lanceolate-acuminate or attenuate-acute? 

 hirsutely ciliate, 3 to 4 inches long ; ray florets numerous, 2 to 

 1\ inches long, nearly ovate-lanceolate, bright yellow ; disc 

 yellow. The roots are similar to but with longer runners than 

 any of the rigidus forms. Prairies and barrens, Indiana, Illinois, 

 Wisconsin. (371, Icetiflorus elatior, Barr. May be tricuspis 

 of Torr and Gray.) 



H. occidentalis, Eiddell. — Stem slender, 2 to 3 feet high, 

 branched, hispid, leafy usually near the base only ; radical and 

 lower leaves ovate-obtuse or lanceolate-oblong, somewhat 

 coriaceous, entire or slightly serrated, distinctly 3-nerved and 

 stalked ; heads mostly solitary, on longish peduncles ; ray 

 florets orange-yellow, 1 inch long, ovate ; disc yellow ; bracts of 

 the involucre lanceolate-acute, hispid. This species resembles the 

 true H. atrorubeus, and differs chiefly in the involucral bracts. 

 Prairies and Oak-barrens in dry ground, Michigan to Kentucky. 



H. mollis, Lam. — Canescent or hoary throughout ; stems 

 3 to 4 feet high, branched almost from the base, grey-green r 

 densely hairy, very leafy; leaves all opposite, or a few of the 

 upper alternate, ovate, with a cordate or clasping base ; bracts 

 of the involucre lanceolate-acute, hoary or villous ; flowers rather 

 large, yellow ; disc yellow. Flowers late August. Dry barrens, 

 Ohio to Iowa, and south to West Georgia and Texas. (Bot. 

 Mag., t. 3689). 



H. Icevigatus, Torr and Gray. — Eootstocknot creeping; stems 

 3 to 5 feet high, branched, deep purple, smooth, and usually 

 glaucous ; leaves all opposite or the upper alternate, sessile or 

 subsessile, lanceolate-acute, entire, serrulate, or mostly entire, 

 reticulately veined, 3-nerved; bracts of the involucre lanceo- 

 late-acuminate ; flowers bright yellow ; ray florets 6 to 8 in 

 number, about an inch long. Alleghany Mountains in Virginia 

 and North Carolina. 



D 2 



